Oil Additives- any good or Wot ?

What do you expect the additives to do? The few additives I've tried in the past (like about 18 years ago) which were supposed to do things like stop oil leaks or make a clapped out RWD Cavalier run better made no difference what so ever. As most people here will tell you, regular oil changes with a reasonable oil do far more for your car than some additive which, if it were any good, would be included in the oil anyway.

ramjaminn1 wrote in news: snipped-for-privacy@walkhouse.demon.co.uk:

Snake oil is good,if you are the type to believe in it.

I watched a docuinfosoapmercial years ago, they ran a car at a certain revs, noted the speed, added the super oil improver, ran it again at the same revs and it went faster.

It might have been the same stuff or another product, they reckon they added it, ran the engine, drained all the oil out and then ran the engine for the equivalent of 100000 miles with no wear.

I don't know how they get away with this bullshit.

I used to be very bored on a Sunday morning and we had just got Sky.

So, they used a higher gear?

No it was the same gear, apparently everything was the same but it managed about 4 extra mph.

Was the snake oil applied to the tyres and the 4 extra mph measured with the vehicle's own speedometer?

Well, 20 yrs or so ago , things were different. Oil was junk compared with nowadays, and additives may have been worth adding then. Wynns certainly slowed down the (normal) rapid piston ring wear rate on my 1958 BSA A10

650cc bike in the late 70's. I stripped that engine many times and measured ring life/wear many times in the 10 yrs I had that bike and Wynns rocked. Nowadays the oils have got all the additives you need already in them.

This is exactly why the stuff sells.

;-)

Chris

It is also perfectly reasonable to expect the 4mph increase...

...After around 1/3 of the engine has worn away, this makes the whole vehicle lighter, hence the speed increase. :-)

I didn't say I believed it, see my previous post where I said 'I don't know how they get away with this bullshit'